<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    div {
      margin: 10px;
    }

    .arrow1 {
      width: 50px;
      height: 50px;
      border-top: 20px solid;
      border-left: 20px solid;
      border-bottom: 20px solid;
      border-right: 80px solid;
      border-color: black red green blue;
    }

    .arrow2 {
      width: 0px;
      height: 0px;
      border-top: 20px solid;
      border-left: 20px solid;
      border-bottom: 20px solid;
      border-right: 80px solid;
      border-color: transparent red transparent transparent;
    }

    .arrow3 {
      width: 50px;
      height: 50px;
      border-top: 20px solid;
      border-left: 20px solid;
      border-bottom: 20px solid;
      border-right: 80px solid;
      border-color: black red green blue;
    }

    .arrow4 {
      width: 50px;
      height: 50px;
      border-top: 20px solid;
      border-left: 20px solid;
      border-bottom: 20px solid;
      border-right: 80px solid;
      border-color: black red green blue;
    }
  </style>
</head>

<body>
  <div class="arrow1"></div>
  <div class="arrow2"></div>
  <div class="arrow3"></div>
  <div class="arrow4"></div>
</body>

</html>